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Donate to IanJohnston.com using PayPal here, or pledge a donation via Patreon here.
I like creating electronics related YouTube videos. I mostly buy faulty gear from Ebay and make a repair video of it,
but it's expensive and so with your help maybe I can continue to do so.
If you have any faulty test gear you don't want or going cheap then please contact me. Your support would be greatly appreciated.


Latest Articles.............

Video Blog 136 - Rapid 7022 Digital Storage Oscilloscope Repair

Donated to the channel by Aaron from England, this Rapid 7022 (re-badged BK Precision 2522B) Oscilloscope has some digital troubles.
Date: 14/06/24

Video Blog 135 - Tektronix 465 Oscilloscope Repair

Donated to the channel by Richard from Oxford, this 465 has a couple of dodgy pots and switches. Can I get to them, and will Deoxit be enough?
Date: 08/06/24

Video Blog 134 - Faulty Test Gear Donations - Follow-Up

This is a follow-up video to the call-to-arms video I published a couple of weeks ago asking if anyone had any faulty test gear they wouldn't mind donating to my channel.
Date: 06/06/24

Video Blog 133 - Keithley 2001 7.5 Digit DMM Repair (re-uploaded condensed)

Back in 2022 I published a 6-part series of videos for the repair of this Keithley 2001 DMM. Re-uploaded as a single ~1hr condensed video
Date: 24/05/24

Video Blog 132 - 3458A 8.5digit DMM Non-Volatile RAM Replacement

The battery backed Dallas RAM IC's in my 3458A are 8 years old, it's time to replace them.
Date: 22/05/24

Video Blog 131 - Faulty Test Gear - I Need Your Help!

Call to arms video from myself to you hobbyists, enthusiasts, industry professionals and company's alike. Faulty test gear is now extremely hard to find, perhaps you have something you don't need and would like to donate to my channel?
Date: 11/05/24

Video Blog 130 - Thurlby 30V-2A Bench Power Supply Repair

This Thurlby 30C-2A bench power supply has been neglegted and it's in need of repair and a little bit of renovation.
Date: 10/05/24